// lock sets set the 'open' property of an object to false. Also resets all fields used by
// all open methods
func (c *ObjectController) Lock(params martini.Params, res http.ResponseWriter, req services.AuxRequestContext, log *config.CustomLog, db *services.DB) {
// TODO: get from access token
// authorizing wallet id
authWalletID := "55c679145fe09c74ed000001"
dbTx, err := db.GetPostgresHandleWithRepeatableReadTrans()
if err != nil {
c.log.Error(err.Error())
services.Res(res).Error(500, "", "server error")
return
}
// get the object
object, found, err := models.FindObjectByObjectID(dbTx, params["id"])
if !found {
dbTx.Rollback()
services.Res(res).Error(404, "not_found", "object was not found")
return
} else if err != nil {
dbTx.Rollback()
c.log.Error(err.Error())
services.Res(res).Error(500, "", "server error")
return
}
// ensure object belongs to authorizing wallet
if object.Wallet.ObjectID != authWalletID {
dbTx.Rollback()
services.Res(res).Error(401, "unauthorized", "objects: object does not belong to authorizing wallet")
return
}
// clear open related fields of object
clearOpen(&object)
// save update and commit
dbTx.Save(&object).Commit()
services.Res(res).Json(object)
}
// create a new object by subtracting from a source object
func (c *ObjectController) Subtract(res http.ResponseWriter, req services.AuxRequestContext, log *config.CustomLog, db *services.DB) {
// TODO: get from access token
// authorizing wallet id
authWalletID := "55c679145fe09c74ed000001"
// parse body
var body objectSubtractBody
if err := c.ParseJsonBody(req, &body); err != nil {
services.Res(res).Error(400, "invalid_body", "request body is invalid or malformed. Expects valid json body")
return
}
// object is required
if c.validate.IsEmpty(body.Object) {
services.Res(res).Error(400, "missing_parameter", "Missing required field: object")
return
}
// amount to subtract is required
if body.AmountToSubtract < MinimumObjectUnit {
services.Res(res).Error(400, "invalid_parameter", "amount: amount must be equal or greater than the minimum object unit which is 0.00000001")
return
}
dbTx, err := db.GetPostgresHandleWithRepeatableReadTrans()
if err != nil {
c.log.Error(err.Error())
services.Res(res).Error(500, "", "server error")
return
}
// get the object
object, found, err := models.FindObjectByObjectID(dbTx, body.Object)
if !found {
dbTx.Rollback()
services.Res(res).Error(404, "not_found", "object was not found")
return
} else if err != nil {
dbTx.Rollback()
c.log.Error(err.Error())
services.Res(res).Error(500, "", "server error")
return
}
// ensure object is a valuable type
if object.Type == models.ObjectValueless {
dbTx.Rollback()
services.Res(res).Error(400, "invalid_parameter", "object: object must be a valuabe type (obj_value) ")
return
}
// ensure object belongs to authorizing wallet
if object.Wallet.ObjectID != authWalletID {
dbTx.Rollback()
services.Res(res).Error(401, "unauthorized", "objects: object does not belong to authorizing wallet")
return
}
// ensure object's balance is sufficient
if object.Balance < body.AmountToSubtract {
dbTx.Rollback()
services.Res(res).Error(400, "invalid_parameter", "amount: object's balance is insufficient")
return
}
// if meta is provided, ensure it is not greater than the limit size
if !body.InheritMeta && !c.validate.IsEmpty(body.Meta) && len([]byte(body.Meta)) > MaxMetaSize {
services.Res(res).Error(400, "invalid_meta_size", fmt.Sprintf("Meta contains too much data. Max size is %d bytes", MaxMetaSize))
return
} else {
if body.InheritMeta {
body.Meta = object.Meta
}
}
// subtract and update object's balance
object.Balance = object.Balance - body.AmountToSubtract
dbTx.Save(&object)
// create new object
// generate a pin
countryCallCode := config.CurrencyCallCodes[strings.ToUpper(object.Service.Identity.BaseCurrency)]
newPin, err := services.NewObjectPin(strconv.Itoa(countryCallCode))
if err != nil {
dbTx.Rollback()
c.log.Error(err.Error())
services.Res(res).Error(500, "", "server error")
return
}
newObj := NewObject(newPin, models.ObjectValue, object.Service, object.Wallet, body.AmountToSubtract, body.Meta)
err = models.CreateObject(dbTx, &newObj)
if err != nil {
dbTx.Rollback()
c.log.Error(err.Error())
services.Res(res).Error(500, "", "server error")
return
}
dbTx.Commit()
services.Res(res).Json(newObj)
}
// open an object for charge/consumption. An object opened in this method
// will be consumable without restriction
func (c *ObjectController) Open(params martini.Params, res http.ResponseWriter, req services.AuxRequestContext, log *config.CustomLog, db *services.DB) {
// TODO: get from access token
// authorizing wallet id
authWalletID := "55c679145fe09c74ed000001"
// parse body
var body objectOpenBody
if err := c.ParseJsonBody(req, &body); err != nil {
services.Res(res).Error(400, "invalid_body", "request body is invalid or malformed. Expects valid json body")
return
}
// ensure open method is provided
if c.validate.IsEmpty(body.OpenMethod) {
services.Res(res).Error(400, "invalid_parameter", "open_method: open method is required")
return
}
// ensure a known open method is provided
if body.OpenMethod != "open" && body.OpenMethod != "open_timed" && body.OpenMethod != "open_pin" {
services.Res(res).Error(400, "invalid_parameter", "unknown open type method")
return
}
dbTx, err := db.GetPostgresHandleWithRepeatableReadTrans()
if err != nil {
c.log.Error(err.Error())
services.Res(res).Error(500, "", "server error")
return
}
// get the object
object, found, err := models.FindObjectByObjectID(dbTx, params["id"])
if !found {
dbTx.Rollback()
services.Res(res).Error(404, "not_found", "object was not found")
return
} else if err != nil {
dbTx.Rollback()
c.log.Error(err.Error())
services.Res(res).Error(500, "", "server error")
return
}
// ensure object belongs to authorizing wallet
if object.Wallet.ObjectID != authWalletID {
dbTx.Rollback()
services.Res(res).Error(401, "unauthorized", "objects: object does not belong to authorizing wallet")
return
}
// set object's open property to true and open_method to `open`
clearOpen(&object)
object.Open = true
object.OpenMethod = models.ObjectOpenDefault
// for open_timed,
// set 'open_time' field to indicate object open window
if body.OpenMethod == "open_timed" {
// ensure time field is provided
if body.Time == 0 {
dbTx.Rollback()
services.Res(res).Error(400, "invalid_parameter", "time: open window time is required. use unix time")
return
}
// time must be in the future
now := time.Now().UTC()
if !now.Before(services.UnixToTime(body.Time).UTC()) {
dbTx.Rollback()
services.Res(res).Error(400, "invalid_parameter", "time: use a unix time pointing to a period in the future")
return
}
object.OpenMethod = models.ObjectOpenTimed
object.OpenTime = body.Time
}
// for open_pin
// open pin sets a pin for used by charge API
if body.OpenMethod == "open_pin" {
// ensure pin is provided
if c.validate.IsEmpty(body.Pin) {
dbTx.Rollback()
services.Res(res).Error(400, "invalid_parameter", "pin: pin is required")
return
}
// pin must be numeric
if !validator.IsNumeric(body.Pin) {
dbTx.Rollback()
services.Res(res).Error(400, "invalid_parameter", "pin: pin must contain only numeric characters. e.g 4345")
return
}
// pin length must be between 4 - 12 characters
if len(body.Pin) < 4 || len(body.Pin) > 12 {
dbTx.Rollback()
services.Res(res).Error(400, "invalid_parameter", "pin: pin must have a minimum character length of 4 and maximum of 12")
return
}
// hash pin using bcrypt
pinHash, err := services.Bcrypt(body.Pin, 10)
if err != nil {
c.log.Error("unable to hash password. reason: " + err.Error())
services.Res(res).Error(500, "", "server error")
return
}
object.OpenMethod = models.ObjectOpenPin
object.OpenPin = pinHash
}
dbTx.Save(&object).Commit()
services.Res(res).Json(object)
}
// divide an object into two or more equal parts.
// maxinum of 100 equal parts is allowed.
// object to be splitted must belong to authorizing wallet
func (c *ObjectController) Divide(res http.ResponseWriter, req services.AuxRequestContext, log *config.CustomLog, db *services.DB) {
// authorizing wallet id
// todo: get from access token
authWalletID := "55c679145fe09c74ed000001"
// parse body
var body objectDivideBody
if err := c.ParseJsonBody(req, &body); err != nil {
services.Res(res).Error(400, "invalid_body", "request body is invalid or malformed. Expects valid json body")
return
}
// object is required
if c.validate.IsEmpty(body.Object) {
services.Res(res).Error(400, "missing_parameter", "Missing required field: object")
return
}
// number of objects must be greater than 1
if body.NumObjects < 2 {
services.Res(res).Error(400, "invalid_parameter", "num_objects: must be greater than 1")
return
}
// number of objects must not be greater than 100
if body.NumObjects > 100 {
services.Res(res).Error(400, "invalid_parameter", "num_objects: must be greater than 1")
return
}
dbTx, err := db.GetPostgresHandleWithRepeatableReadTrans()
if err != nil {
c.log.Error(err.Error())
services.Res(res).Error(500, "", "server error")
return
}
// get the object
object, found, err := models.FindObjectByObjectID(dbTx, body.Object)
if !found {
dbTx.Rollback()
services.Res(res).Error(404, "not_found", "object was not found")
return
} else if err != nil {
dbTx.Rollback()
c.log.Error(err.Error())
services.Res(res).Error(500, "", "server error")
return
}
// ensure object is a valuable type
if object.Type == models.ObjectValueless {
dbTx.Rollback()
services.Res(res).Error(400, "invalid_parameter", "object: object must be a valuabe type (obj_value) ")
return
}
// ensure object has enough balance (minimum of 0.000001)
if object.Balance < 0.000001 {
dbTx.Rollback()
services.Res(res).Error(400, "invalid_parameter", "object: object must have a minimum balance of 0.000001")
return
}
// ensure object belongs to authorizing wallet
if object.Wallet.ObjectID != authWalletID {
dbTx.Rollback()
services.Res(res).Error(401, "unauthorized", "object does not belong to authorizing wallet")
return
}
// if meta is provided, ensure it is not greater than the limit size
if !body.InheritMeta && !c.validate.IsEmpty(body.Meta) && len([]byte(body.Meta)) > MaxMetaSize {
services.Res(res).Error(400, "invalid_meta_size", fmt.Sprintf("Meta contains too much data. Max size is %d bytes", MaxMetaSize))
return
} else {
if body.InheritMeta {
body.Meta = object.Meta
}
}
// calculate new balance per object
newBalance := object.Balance / float64(body.NumObjects)
// delete object
dbTx.Delete(&object)
// create new objects
newObjects := []models.Object{}
for i := 0; i < body.NumObjects; i++ {
// generate a pin
countryCallCode := config.CurrencyCallCodes[strings.ToUpper(object.Service.Identity.BaseCurrency)]
newPin, err := services.NewObjectPin(strconv.Itoa(countryCallCode))
if err != nil {
dbTx.Rollback()
c.log.Error(err.Error())
services.Res(res).Error(500, "", "server error")
return
}
newObj := NewObject(newPin, models.ObjectValue, object.Service, object.Wallet, newBalance, body.Meta)
err = models.CreateObject(dbTx, &newObj)
if err != nil {
dbTx.Rollback()
c.log.Error(err.Error())
services.Res(res).Error(500, "", "server error")
return
}
newObjects = append(newObjects, newObj)
}
dbTx.Commit()
services.Res(res).Json(newObjects)
}